Burnishing-machine for boot and shoe soles



v 2 Shaw-sheet 1. r I D. G. MATHEWSV Burnishing-Maohine for Boot andShoe Soles. No. 225,228. Patented "Marf9, I880.

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N- PETERS, FNOTO UTHQGRAFHEFL WASHINGTON, D C.

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. D. 0. MATHEWS. Burnishing-Maohine for Boot and Shoe Soles. No.225,228. Patented Mar. 9, I80.

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UNITED STATES PATENT OFFICE.

DON O. MATHEWS, OF LYNN, MASSACHUSETTS.

BURNlSHlNG-MACHINE FOR BOOT AND SHOE SOLES.

SPECIFICATION forming part of Letters Patent No. 225,228, dated March 9,1880.

. Application filed November 28, 1879.

5 useful Improvements in Machines for Burnishing the Edges of Boot andShoe Heels, of which the following, taken in connection with theaccompanying drawings, is a specification.

My invention relates to a machine for automatically burnishing the edgesof boot and shoe heels; and it consists in certain novel arrangementsand combinations of devices whereby the shoe is more readily and easilyjacked, and the burnishing-tool is readily ad- 15 justed to thedifferent styles and shapes of heels, and made effective in burnishingthe heel-edge and the rand as well, the details of which devices will bebest understood by reference to the description of the drawings, inwhich Figure 1 is a plan of a machine embodying my improvements. Fig. 2is a front elevation. Fig. 3 is a side elevation looking at the end ofthe jacking device. Fig. 4 is an elevation of the side opposite to Fig.3. Fig. 5 is a detail drawing illustrating the mechanism for raising andlowering the burnishing-tool to adjust it to the best working positionon the different parts of the heel. Fig. 6is a partial section throughthe jack-supportin g bracket, and illustrating the mechanism for jackingthe boot or shoe, drawn to an enlarged scale. Figs. 7, S, and 9aredetails illustrating the construction of the burnishing-tools andtheir application to the carrier, enlarged; and Fig. 10 is a developmentof the cylindercam for imparting motion to the heel of the boot or shoein contact with the burnisher, also drawn to an enlarged scale.

A is a column supported by a suitable base ,or legs, A, and upon whichthe operating parts of the machine are supported. Bis the driving-shaft,mounted in bearings A and having secured thereon the driving-pulley O,by means of which and a belt (not shown) powermay be applied thereto,and the pulley D, from which the belt D leads to the pulley E, securedupon the end of the cam-shaft E, mounted in hearings to a on the'columnA, and having secured thereon the cylinder-cam E which has formed in itsperiphery a zigzag path, I), of varying throws, with which theantifriction roll a, mounted on the end of the short arm F of thetoothed segment F, engages, as shown.

The segment F is mounted upon a stud or journal, 01, set in the side ofthe column A, and its teethengage with corresponding teeth of the pinionG, secured to one end of the shaft 6, which is mounted in suitablebearin gs on top of the column A, and has secured to its other end theheel-rest or bearing-plate f, for the tread-surface of the boot or shoeheel to bear against when the boot or shoe is jacked, said hearingplatebeing provided with a shoulder,f, to bear againstthe breast of the heel,while the opposite end of said plate is shaped to correspond to thedesired shape of the heel-tread.

H is a jack rod 'or bar, made rectangular in crosssection and fitted toand adapted to be moved in a correspondingly-shaped hearing in thebracket I in a direction in axial line with the shaft 0, and has securedupon its inner end the swiveling head H, fitted to enter the boot orshoe and bear upon the heel portion of the inner sole and press the bootor shoe heel hard against the heel-plate -f, to clamp the heel betweenthe two surfaces, thereby compelling the heel to be revolved or vibratedwith the shaft '6.

To obtain the desired clamping-pressure of the bar H, it is providedupon its under side with a series of ratchet-shaped teeth, g, with whichcorrespondingly-shaped teeth formed upon the upper side of the movableplate h engage as said plate is pressed upward and toward the shoe bythe action of the togglelinks 45 and 'i as they are straightened by apartial rotation of the cam-lever J into the position shown in Fig. 6.

The tool j, for burnishing the edge of the sole, has formed in its backface a dovetail groove to fit a correspondingly-shaped lip or tongue onthe upper section, K, of the toolcarrier in such a manner that it may bereadily removed from or applied to said carrier, said tool being securedfrom accidental displacement by the pin 70, which passes through thecarrier-head and enters a hole in the tool, and is held in position bythe spring k, as-shown in Fig. 9.

Arand burnishing and setting tool, I, is also secured to the head ofsection K by means of the screw Z, which passes through a slot in saidtool, and is screwed into the head of K in such a manner that the tool Ishall fit close to and in contact with one end of the tool j,

- and be capable of adjustment to cause its working-edge to project agreater or less distance beyond the workingface of the tool j, andconsequently to a greater or less distance into the rand of the boot orshoe.

The section K of the tool-carrier is pivoted at m to the section K, andis provided with a handle, m, whereby it may be vibrated about saidpivot to a limited extent, determined by the length of the curved slot1%, formed in the lower end of K, and the pin it, set in K, or about avertical axis of motion rendered possible by fitting the lower end of Kto a cylindrical socket in the lower section, K of the carrier, saidmotions being for the purpose of controlling the position of theburnishing-surfaces of the tools relative to the surface of the heelbeing acted upon.

The tool carrier, composed of the three pieces, K, K, and K is pivotedat 0 to the short link L, which, in turn, is pivoted to some fixedportion of the frame of the machine, as at 19, Figs. 3 and 5.

The tool-carrier K K K may be adjusted, by means of its pivot-pin 0 andthe set-screws 0 0 so as to move the burnishing-tools toward or fromthe'tread-surface of the heel to be burnished, in order that the toollmay enter the rand whatever may be the. thickness of the heel.

The burnishing-tools j and I may be set in the desired normal positionvertically by means of the set-screw q, set in the socket K and actingupon the lower end of K to raise or lower it, according as said screw isturne in one direction or the other.

In order that the burnishiug-tools shall work with equal effect upon allparts of the heel-edge as said heel is rapidly vibrated with varyingthrows about the axis of the shaft 6, it is necessary to automaticallyraise and lower the burnishing-tools during the operation of rubbing theheel-edge, on account of the pe-' culiar shape of the heelt'. 6., oneportion curved and nearly concentric with its axis of vibration, andother portions nearly straight and tangent to the curved portion.

To give this automatic movement to the tools, I place upon the shaft 0 apattern-cam, r, of the desired shape appropriate to theparticular heelto be finished, which cam, acting upon the truck 8 on the lever M,pivoted at one end to some portion of the frame and connected at itsother end to the upper end of the link N, the opposite end of which isconnected to the link L, raises the tool-carrier and the tools attachedthereto, or allows them to be depressed by the united action of gravityand the downward pressure exerted by the treadle O and the cord 0,leading therefrom over the grooved wheel t, and attached at its upperend to the upper section, K, of the tool-carrier.

The treadle O and the cord 0 also serve the purpose of holding the toolsfirmly in contact with the heel-edge with a yielding pressure. 7

The cylinder-cam E is designed to impart to the shoe clamped to theshaft 0 a series of rapid vibrations of varying lengths, in such amanner that the tools shall rub or act upon fractional portions of theheel-surface at each or nearly all of the vibrations of the'heel, eachsucceeding vibration of the heel bringing a portion of the heel incontact with the tools that was not acted upon by the next precedingvibration, by which arrangement all parts of the heel-edge aresuccessively subjected to short, quick, and often repeated rubbingaction in contact with the tools, wherebya fine finish is produced uponthe heel-edge, very similar to that produced by the handtool in thehands of an expert operator.

What I claim as new, and desire to secure by Letters Patent of theUnited States, is-

1. The combination of the shaft 6, heel-rest f, jack-bar H, providedwith ratchet-teeth g and swiveling head H, the toothed plate h,toggle-links i and 'i, and the cam-lever J, all

arranged and adapted to operate substantiallyv as and for the purposesdescribed.

2. The combination of the shaft 0, heel-rest f, a clamping mechanism forsecuring the heel to said rest and compelling it to be moved with saidshaft and rest, the pinion G, the segment F, provided with arm F,anti-friction roll 0, and the cylinder-cam E having formed therein azigzag path, 1), adapted to impart to said segment and the shaft 0, withthe shoe clamped thereto, a succession of rapid Vibrations of varyinglength, substantially as described.

3. The tool-carrier composed of the three parts K, K, and K constructedand united substantially as and for the purposes described. 4. Thecombination of the pivoted tool-carrier K K K the treadle O, cord 0, andpulley 2, all arranged and adapted to operate substantially as and forthe purposes described.

5. In combination with the shaft 0, heel-rest f, and a mechanism forclamping the heel to the rest, the burnishing-tools j and I, one orboth, the carrier K K K links L and N, 1ever M, truck .9, and cam 'r,all arranged and adapted to operate substantially as described.

Massachusetts, this Executed at Boston, 26th day of November, A. D.1879.

DON (l. MATHEWS.

Witnesses N. O. LOMBARD, E. A. HEMMENWAY.

